石墨烯/聚苯胺修饰阳极对微生物燃料电池性能的影响

doi:10.11949/j.issn.0438-1157.20181433

化工学报 ›› 2019, Vol. 70 ›› Issue (6): 2343-2350.DOI: 10.11949/j.issn.0438-1157.20181433

石墨烯/聚苯胺修饰阳极对微生物燃料电池性能的影响

靳宏伟¹(),翟丹丹¹(),王心¹,赵爽^1,²,孟祥阳¹,何玥颖¹,沈洋¹,惠明¹()

1. 河南工业大学生物工程学院，河南郑州 450001
2. 华东师范大学化学与分子工程学院，上海 200241

收稿日期:2018-11-30 修回日期:2019-03-11 出版日期:2019-06-05 发布日期:2019-06-05
通讯作者: 惠明
作者简介:靳宏伟（1995—），男，硕士研究生，474522892@qq.com；翟丹丹（1981—），女，博士，讲师，daneszh@haut.edu.cn|靳宏伟（1995—），男，硕士研究生，474522892@qq.com；翟丹丹（1981—），女，博士，讲师，daneszh@haut.edu.cn
基金资助:
国家自然科学基金项目(21606072);河南省科技厅自然科学项目(182102110421);河南省重大科技专项(181100211400-8)

Effect of graphene/polyaniline modified anode on performance of microbial fuel cell

Hongwei JIN¹(),Dandan ZHAI¹(),Xin WANG¹,Shuang ZHAO^1,²,Xiangyang MENG¹,Yueying HE¹,Yang SHEN¹,Ming HUI¹()

1. College of Biological Engineering, Henan University of Technology, Zhengzhou 450001, Henan, China
2. School of Chemistry and Molecular Engineering, East China Normal University, Shanghai 200241, China

Received:2018-11-30 Revised:2019-03-11 Online:2019-06-05 Published:2019-06-05
Contact: Ming HUI

摘要/Abstract

摘要：

纳米材料修饰阳极可显著提高微生物燃料电池（MFC）性能，本研究主要探索了石墨烯、聚苯胺和石墨烯/聚苯胺复合修饰电极对MFC产电性能的影响。使用电化学方法电镀石墨烯于碳布表面，进一步通过原位聚合法制备聚苯胺来修饰碳布电极。将修饰电极装载入双室型MFC中，测量其产电性能，并对电极进行表征，测量电化学性能。通过扫描电镜观察到, 碳布能够被修饰上石墨烯和聚苯胺，并且聚苯胺附着于碳纤维或石墨烯薄层表面，形成棒状的纳米结构。产电性能方面，装载石墨烯/聚苯胺修饰电极的MFC最大输出电压最高，达到了（291±22）mV，比装载空白碳布电极的对照组MFC提高了175%以上。石墨烯/聚苯胺电极组MFC的最大输出功率密度同样最高，达到了（653 ± 25）mW·m^-2，为空白碳布对照组的10.5倍。实验结果表明：石墨烯/聚苯胺复合修饰电极可有效利用石墨烯导电性好和聚苯胺生物相容性高的优点，显著提高MFC的产电性能。

关键词: 聚苯胺, 石墨烯, 纳米复合材料, 微生物燃料电池, 生物能源

Abstract:

Nanomaterial modified anode can significantly improve the performance of microbial fuel cell (MFC). The effects of graphene, polyaniline and graphene/polyaniline composite modified electrode on the power output of MFC is mainly explored in this paper. Graphene was electroplated on the surface of the carbon cloth by electrochemical method, and the polyaniline was further prepared by in-situ polymerization to modify the carbon cloth electrode. The modified electrodes were further loaded into a dual-chamber MFC, and the power generation performance was measured. It was observed by scanning electron microscopy that graphene and polyaniline could be modified on the carbon cloth, and polyaniline adhered to the surface of the carbon fiber or graphene thin layer to form a rod-shaped nanostructure. In terms of electricity production performance, the maximum output voltage of MFC loaded with graphene/polyaniline composite modified electrode reached (291±22) mV, which was more than 175% higher than that of the control group loaded with unmodified carbon cloth electrode. The maximum power density of the graphene/polyaniline composite modified electrode group reached (653 ± 25) mW·cm^-2, which was 10.5 times of the control group. The results show that the graphene/polyaniline composite modified electrode can effectively utilize the advantages of good conductivity of graphene and high biocompatibility of polyaniline, and significantly improve the power output of MFC.

Key words: polyaniline, graphene, nanocomposites, microbial fuel cells, bioenergy

中图分类号:

TB 33

靳宏伟,翟丹丹,王心,赵爽,孟祥阳,何玥颖,沈洋,惠明. 石墨烯/聚苯胺修饰阳极对微生物燃料电池性能的影响[J]. 化工学报, 2019, 70(6): 2343-2350.

Hongwei JIN,Dandan ZHAI,Xin WANG,Shuang ZHAO,Xiangyang MENG,Yueying HE,Yang SHEN,Ming HUI. Effect of graphene/polyaniline modified anode on performance of microbial fuel cell[J]. CIESC Journal, 2019, 70(6): 2343-2350.

图/表 8

表1 采用不同的石墨烯聚苯胺复合电极材料作为MFC阳极时MFCs的最大功率密度对比

Table 1 Comparison of maximal power density with previous reports using PANI /graphene modified electrodes as anodes of MFCs

阳极	修饰材料制备方法	MFC类型	阳极微生物	最大功率密度P _max /(mW·m^－2)	文献	修饰材料制备难度	修饰材料制备成本	对MFC性能的提升效果
PANI/石墨烯/钛片	PANI：电沉积，循环伏安法；石墨烯：电沉积，循环伏安法	双室	生活污水	156	[18]	+	+	+
PANI/石墨烯泡沫	PANI：原位聚合,质子酸掺杂；石墨烯：化学气相沉积	双室	Shewanella oneidensis	768	[17]	+++	+++	+++
PANI/石墨烯/石墨纸	PANI：电化学，恒电流法电聚合；石墨烯：电化学剥离	双室	Shewanella oneidensis	381	[19]	+	+	++
PANI/石墨烯/石墨棒	PANI和石墨烯：电沉积，循环伏安法	双室	活性污泥	230.2	[20]	+	+	+
PANI/石墨烯/碳布	PANI：原位聚合，无掺杂；石墨烯：电镀	双室	Shewanella oneidensis	653	本文	+	+	+++

图1 不同修饰电极扫描电镜图片

Fig.1 SEM images of different electrode modification materials

图2 石墨烯和聚苯胺及复合修饰材料的拉曼光谱图

Fig.2 Raman spectra of GO and PANI and composite modification material

图3 石墨烯和聚苯胺及复合修饰材料的XRD谱图

Fig.3 XRD patterns of GO and PANI and composite modification material

图4 不同修饰电极组MFC输出电压曲线及其最大输出电压对比

Fig.4 MFC output voltage curve and its maximum output voltage comparison of different modified electrode groups

图5 不同电极MFC的极化曲线和功率密度曲线（a）及最大功率密度（b）的对比

Fig.5 Output voltage and power density of different modified electrode groups and its maximum power density

图6 不同电极在MFC中的循环伏安曲线

Fig.6 CV curves of MFCs with different anodes (-0.8—0.2 V, 1 mV·s-1)

图7 不同修饰电极的电化学阻抗谱的Nyquist图

Fig.7 Nyquist plots on different modified electrodes for electrochemical impendance spectroscopy at OCV (open circuit voltage)

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石墨烯/聚苯胺修饰阳极对微生物燃料电池性能的影响

Effect of graphene/polyaniline modified anode on performance of microbial fuel cell

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